Remove CORE_ABI and bring rnwin32 and MS.RN much closer in functionality

CodeQL.yml

@@ -22,7 +22,6 @@ path_classifiers:
     - "**/packages/integration-test-app"
     - "**/packages/playground"
     - "**/packages/sample-app-fabric"
-    - "**/vnext/Desktop.ABITests"
     - "**/vnext/Desktop.IntegrationTests"
     - "**/vnext/Desktop.Test.DLL"
     - "**/vnext/Desktop.UnitTests"

Directory.Build.targets

@@ -108,7 +108,6 @@
         RnwNewArch;
         UseFabric;
         FollyDir;
-        IncludeFabricInterface;
         UseFabric;
         YogaDir;
         WinVer;

change/react-native-windows-83a04eac-5263-4e7a-99d8-85f1ac764999.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Remove CORE_ABI and bring rnwin32 and MS.RN much closer in functionality",
+  "packageName": "react-native-windows",
+  "email": "30809111+acoates-ms@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}